How do I drain the pool level we had lots of rain, now my skimmer is not sucking water to pump.?

There is a main drain, which is off, skimmer which is half way open, and cleaner which is all the way open. What do I do? I believe I need to lower the water level. It's all the way up to the top of the skimmer. By the way, this is an inground pool with hayward cartride pump and filter.